Geumjeongsanseong

Geumjeongsanseong

Largest mountain fortress in South Korea. Fortress was built in 1703 and its walls were some 17 km long, 1.5 – 3 m tall.

Long Wall of Quảng Ngãi

Long Wall of Quảng Ngãi

127.4 km long rampart, most likely built in the early 16th century and reinforced in 1819 as ordered by Nguyễn emperors. Wall is up to 4 m high and 2.5 m wide, mostly built from rocks. Wall is parallel to an ancient trade route.

Sungbo’s Eredo

The wall of Sungbo's Eredo ditch, Nigeria

160 km long ring-wall enclosing ancient land of Sungbo. Built sometimes around 1000 AD by local culture.